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Finding the Fourth Proportional to 563,550.84, 776,393.10 and 393,515.64

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Solution

The fourth proportional to 563,550.84, 776,393.10 and 393,515.64 is: 542,138.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,550.84 : 776,393.10 = 393,515.64 : x
  2. Step 2: Convert to fraction form
    563,550.84/776,393.10 = 393,515.64/x
  3. Step 3: Cross multiply
    563,550.84x = 776,393.10 × 393,515.64
  4. Step 4: Simplify right side
    563,550.84x = 305,522,827,638.08
  5. Step 5: Solve for x
    x = 305,522,827,638.08/563,550.84
  6. Step 6: Final answer
    x = 542,138.89

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.